Qhov cuam tshuam ntawm qhov kub thiab txias ntawm kev ua haujlwm thiab lub neej ntawm kev sib txuas lus hloov cov khoom siv hluav taws xob
Lub ntsiab tseem ceeb ntawm kev sib txuas lus hloov hluav taws xob yog qhov hloov hluav taws xob ntau zaus, uas tau maj mam tsim thiab loj hlob nrog kev txhim kho ntawm lub zog hluav taws xob txoj kev xav thiab thev naus laus zis nrog rau cov khoom siv hluav taws xob hluav taws xob. Lub rectifier siv cov cuab yeej hloov pauv tau txo qis kev siv hluav taws xob, txo qhov kub, txo qhov ntim thiab qhov hnyav, thiab txuas ntxiv txhim kho tag nrho qhov zoo thiab kev ntseeg tau. Txawm li cas los xij, thaum twg qhov kub thiab txias nce los ntawm 10 degree, lub neej ntev ntawm cov khoom siv hluav taws xob tseem ceeb txo qis los ntawm 50 feem pua. Yog vim li cas rau qhov kev poob sai sai hauv lub neej yog tag nrho vim qhov kub thiab txias hloov. Kev qaug zog tsis ua hauj lwm tshwm sim los ntawm ntau yam micro thiab macro mechanical stress concentrations, ferromagnetic cov ntaub ntawv thiab lwm yam khoom yuav pib ntau yam micro internal defects nyob rau hauv qhov kev txiav txim tsis tu ncua ntawm alternating stress thaum lub sij hawm ua hauj lwm. Yog li ntawd, kom ntseeg tau tias muaj txiaj ntsig zoo ntawm cov khoom siv hluav taws xob yog qhov tsim nyog los xyuas kom meej tias nws muaj kev ntseeg siab thiab kev ua neej nyob.
Kev sib raug zoo ntawm kev khiav hauj lwm kub thiab kev cia siab rau thiab lifespan ntawm lub hwj chim hluav taws xob Cheebtsam
Lub zog hluav taws xob yog ib qho khoom siv hluav taws xob hloov hluav taws xob uas siv qee lub zog hluav taws xob thaum lub sij hawm hloov dua siab tshiab, uas tom qab ntawd hloov mus rau hauv tshav kub thiab tso tawm. Kev ruaj ntseg thiab kev laus ntawm cov khoom siv hluav taws xob muaj feem cuam tshuam nrog ib puag ncig kub. Cov khoom siv hluav taws xob hluav taws xob yog tsim los ntawm ntau yam khoom siv semiconductor. Vim lub fact tias qhov poob ntawm lub hwj chim Cheebtsam thaum lub sij hawm ua hauj lwm yog dissipated los ntawm lawv tus kheej cua sov, lub thermal cycling ntawm ntau yam ntaub ntawv nrog sib txawv expansion coefficients, uas yog interconnected, yuav ua rau muaj kev nyuaj siab tseem ceeb thiab tej zaum yuav txawm ua rau instantaneous tawg, ua rau cov khoom tsis ua hauj lwm. . Yog tias cov khoom siv hluav taws xob ua haujlwm nyob rau hauv qhov kub tsis zoo rau lub sijhawm ntev, nws yuav ua rau qaug zog uas yuav ua rau tawg. Vim lub thermal qaug zog lub neej ntawm semiconductors, nws yuav tsum tau hais tias lawv yuav tsum ua hauj lwm nyob rau hauv ib tug kuj ruaj khov thiab tsis kub ntau yam.
Nyob rau tib lub sijhawm, kev hloov pauv sai thiab kub kub yuav ua rau muaj qhov sib txawv ntawm qhov sib txawv ntawm cov khoom siv hluav taws xob ib ntus, ua rau muaj kev ntxhov siab thermal thiab thermal shock. Ua kom cov khoom tiv thaiv thermal mechanical stress, thiab thaum qhov kub sib txawv loj heev, nws tuaj yeem ua rau muaj kev ntxhov siab tshwm sim hauv cov khoom sib txawv ntawm cov khoom. Ua tsis tiav ntxov ntawm cov khoom. Qhov no tseem xav tau cov khoom siv hluav taws xob los ua haujlwm nyob rau hauv qhov kev ua haujlwm ruaj khov ntawm qhov kub thiab txias, txo qhov kub hloov pauv kom tshem tawm qhov cuam tshuam ntawm thermal stress shock thiab ua kom ntseeg tau tias lub sijhawm ua haujlwm ntev ntawm cov khoom.
Kev cuam tshuam ntawm kev ua hauj lwm kub ntawm lub rwb thaiv tsev muaj peev xwm ntawm transformers
Tom qab thawj winding ntawm lub transformer yog energized, lub magnetic flux generated los ntawm lub kauj ntws los ntawm cov hlau core. Vim lub fact tias cov tub ntxhais hlau nws tus kheej yog ib tug conductor, ib tug induced electromotive quab yuam yog generated nyob rau hauv ib tug dav hlau perpendicular mus rau lub magnetic teb kab, tsim ib tug kaw Circuit Court nyob rau hauv lub cross-section ntawm cov hlau core thiab tsim tam sim no, hu ua "eddy. tam sim no". Qhov no 'eddy tam sim no' nce qhov poob ntawm transformer thiab ua rau kom qhov kub thiab txias ntawm transformer vim cua sov ntawm cov tub ntxhais hlau. Qhov poob los ntawm "eddy tam sim no" yog hu ua "hlau poob". Tsis tas li ntawd, cov xov tooj ntawm tooj liab siv hauv transformers yuav tsum raug mob. Cov xov tooj tooj no muaj qhov tsis kam, uas siv qee lub zog thaum tam sim no ntws los ntawm lawv. Qhov kev poob no dhau los ua cua sov thiab noj, uas yog hu ua "tooj liab". Yog li hlau thiab tooj liab poob yog qhov laj thawj tseem ceeb rau qhov kub thiab txias thaum lub sijhawm ua haujlwm transformer.
